In a second step, they could answer an optional 30-item part (concerning past relationships and preferences for physical features) The study design was a cross-sectional online survey implemented in the survey software Typeform v2 ( The study was online from . Subjects were told that the survey was about the qualities of their ideal partner(s).… Continue reading In a second step, they could answer an optional 30-item part (concerning past relationships and preferences for physical features)